Lithographic Ink Handling Guide

Ink Systems – Customer Reference

1. Introduction

Lithographic (offset) inks are precision-formulated materials designed to deliver consistent color, print performance, and press stability. Proper handling, storage, and usage are critical to achieving optimal results and minimizing waste.

This guide outlines best practices for storing, handling, and using lithographic inks in your facility.

2. Storage Guidelines

Temperature

• Store inks between 65°F and 80°F (18°C–27°C)
• Avoid extreme heat or cold:
  • Cold ink → stiff, poor transfer
  • Hot ink → overly soft, increased emulsification

Environment

• Keep in a dry, clean area
• Avoid direct sunlight
• Maintain consistent ambient conditions

Shelf Life

• Most lithographic inks have a shelf life of:
  • 12–24 months (depending on formulation)
• Rotate stock using FIFO (First In, First Out)

3. Handling Best Practices

Before Use

• Allow ink to acclimate to pressroom temperature
• Stir ink if separation is observed (do not overmix)

Contamination Prevention

• Always use clean ink knives/spatulas
• Never return contaminated ink to original container
• Avoid mixing different ink systems unless approved

Container Management

• Keep lids tightly sealed when not in use
• Minimize exposure to air to prevent skinning

4. Pressroom Usage

Ink Loading

• Start with minimal ink and increase gradually
• Avoid overloading the ink train

Water Balance

• Lithographic printing depends on proper ink-water balance
• Too much water:
  • Washed-out color
  • Emulsification issues
• Too little water:
  • Scumming
  • Plate contamination

Additives

Only use approved additives:

• Reducers
• Tack modifiers
• Driers

Always:

• Add in small increments
• Mix thoroughly before evaluating results

5. Color Consistency

Standardization

• Use consistent:
  • Substrates
  • Fountain solutions
  • Press settings

Proof Matching

• Compare against:
  • Drawdowns
  • Pantone references (if applicable)

Documentation

• Record:
  • Ink batch numbers
  • Additives used
  • Press conditions

This ensures repeatability across jobs.

6. Safety & Compliance

Personal Protective Equipment (PPE)

• Gloves recommended for prolonged handling
• Safety glasses when splashing is possible

Ventilation

• Ensure adequate airflow in pressroom

SDS (Safety Data Sheets)

• Always review SDS for:
  • Handling precautions
  • Spill procedures
  • Disposal guidelines

7. Cleanup & Waste Management

Cleaning

• Use approved press washes and cleaning solutions
• Clean ink train thoroughly between color changes

Waste Disposal

• Dispose of:
  • Ink waste
  • Rags
  • Containers
    in accordance with local regulations

8. Common Issues & Troubleshooting

Issue	Possible Cause	Solution
Poor transfer	Ink too cold/stiff	Warm to room temp
Excessive emulsification	Too much water	Reduce fountain solution
Set-off	Slow drying	Use drier or adjust ink film
Scumming	Insufficient water	Increase fountain solution
Toning	Ink/water imbalance	Rebalance system

9. Technical Support

Ink Systems is committed to your success.

If you encounter issues or need optimization guidance:

• Contact your Ink Systems representative
• Provide:
  • Ink type
  • Substrate
  • Press conditions
  • Photos if possible

10. Final Notes

Consistent handling practices lead to:

• Better print quality
• Reduced waste
• Improved press efficiency

A disciplined approach to ink management is one of the most impactful ways to improve overall production performance.

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